.floating_btn {
    position: relative;
    width: 40px;
    height: 40px;
    border-radius: 100%;
    background-image: linear-gradient(45deg, #52ffaf, #2196f3);
    box-shadow: 0 1px 2px 1px rgba(0, 0, 0, 0.2s);
}
.floating_btn::before,
.floating_btn::after {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    width: 18px;
    height: 3px;
    display: block;
    margin-left: -9px;
    border-radius: 3px;
    background-color: white;
    transition: all .2s ease;
}
.floating_btn::before {
    transform: translateY(12px);
    filter: drop-shadow(0 6px 0 while);
}
.floating_btn::after {
    transform: translateY(24px);
}
.floating_btn:hover::before {
    filter: none;
    transform: translateY(18px) rotate(-45deg);
}
.floating_btn:hover::after {
    transform: translateY(18px) rotate(45deg);
}